Building-block.



' PATENTE@ PEB. 13, 1906.

' E. MGM.- SAWYBR` BUILDING BLOCK.

APPLIOMION :F1/,LED MAR.9. 1005.

' Charlotte, in the county of UNITED srArEs .PATENr oEEIoE.

' FRANK MGM. SAWYER, QF CHARLOTTE, NORTHVCAROLINA.

BUILDING-eLook.

To LLZZ wiz/0m L'mwy oon/cern:

Be it known that I, FRANK MCM. SAWYER, a citizen of the United States,residing at Mecklenbur and State of North Carolina, haveinventeg certainnenT and useful Improvements in Build ing-Blocks; and I do declare thefollowing to 'be a full, clear, and exact description of the clan Viewot one of my bricks or invention, such as will enable others skilled inthe art to which it appertainsto make Aand use the same.

This invention `"relates to building-blocks;

to provide a molded artificial-stone building block or brick which Willpresent a smooth unbroken outer and inner surface to a Wall Speclicationof Letters Patent.

Appiioamn ned March 9.1905. sera1No.249,z5e.

and one ofthe principal objects of the same is and which will providevertical Ventilating-- o enings or air-passages from the bottom to t etop of the Wal1.

Another object is to provide a building block or brick which can bemanufactured at slight cost and Which will break joints when laid and inwhich the corners of the Wall Will be braced and tied, owing to thecontour of the bricks and the manner in which the same are laid informing .the Wall.

These 'and other objects are attained by means of the constructionillustrated in the accompanying drawings, in Whichf Figurel is a planview of aWall durin the course of-construction With bricks ma e inaccordance Withmr invention. Fig.'2 is a blocks, and Fi A3 isaperspective view of the same.

eferringto the drawings for ticular description of my invention, thenumoral 1 designates a brick or block which may be 'molded of cement andsand or other plastic material, said brick consisting of the plain frontsurface 2, extendin across the brick, and. ends 3,WhicI1 are alsounbroken,and the oblique Walls 4 upon the inside ofthe brick, the wallor surface 5. con- .nesting the oblique surfaces, and thus formin 1 thesubstantially rectangular feet 0W- a more pary entirelyr tied, providingvertical air-spaces 7 in .Patented Feb. 13, 1906.

ing to the contour and dimensions of the brick a wall can be built inwhich the ybricks are reversed in each alternate layer, as shown in Fi 1of the draWin s, and all the 'oints Will t us be broken an .the bricksbe mlly 5o t e Walls, and the air-s aces in the corners divided intofour equal-l divisions braced by the web 5 of the brick. A brick made inaccordance with my invention is comparatively 5 5 li ht in Weight,requires less material to manacture thesa'me than is required in bricksof ordinary construction; While the advantages of a Ventilating-Wall areattained by the use ofthe brick and at .the same time the cor- 6o nersof the Walls "are braced. and tied in a strong and efficient manner.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to Without departing from the prin- '65ciple or sacrificing anyof the advantages of this invention..

Having thus described my invention, What Iclaim as new, and desire tosecure by Letters Patent, is- 7o The herein-described'building-Wall madeup ofbricks or blocks having three unbroken surfaces 2, 3, 3, thesurfaces 3, 3, formingthe inner and outerfacing of the Wall, and arecessed side` forming feet 6, the inner Walls 4 of 7 5 which areoblique and providing the inner Wall or web 5,;said blocks being placedin reverse order in eachal'ternate layer to break joint and toprovidmyertical Ventilatingspaces 7 between the bricks rand to formcross 8o bracing-Websinthe corners of the Wall, essentially asdescribed.

In testimony whereof I havehereunto set my hand in presence of tWosubscribing wit- IIGSSGS,

FRANK MoMfsAWYER. y

Witnesses:

BENJ; G. Cowr., Woon.

